package main

import "fmt"

func main() {

	var s1 []int
	s1 = append(s1, 1, 2)

	fmt.Println(len(s1))
	fmt.Println(cap(s1))
	fmt.Println(s1)

	s2 := []int{1, 2}
	s2 = append(s2, 3, 4, 5)

	fmt.Println(len(s2))
	fmt.Println(cap(s2))
}
